Multiple choice

A man covers a distance in 12 hours when he runs at the speed of 15 km./hr. while returning he increases his speed to 20 km./hr. Find the time he would take during his return to the starting point.

  1. 7.5 hrs.

  2. 8 hrs.

  3. 9 hrs.

  4. 9.5 hrs.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Distance = speed × time = 15 × 12 = 180 km. Return trip time = distance/speed = 180/20 = 9 hours. The return journey takes 9 hours.

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